Gyratory crusher.



PATENTBD JAN. 1, 1907. W. A. SPRING.

GYRATORY GRUSHEB.

APPI IOATION FILED MAE.11, 1905.

35 ameter than the seat within which they rest,

type that partof the main shaft which is located above the center of gyration has a gyratory motion, and this gyratory move- 'ment must be provided for in such suspen-.

swing on a spherical surface described from a oint in line 18, this line being located at the ower end of the cyhndric portion 19 of the shaft, which constitutes the bearing surlace,

and the shaft below this point being slightly reduced in diameter. It follows that lateral movement'must be provided for in. the hearing members, which rest upon the supporting-ledge 11, and thismovement I provide for by interposing between the under side of the cap 14 and the led e 11 a pair of washers" 20 and 2-1, respective-l which have parti spherical meetirw faces described from. a cen ter located in the axis of the shaft in the plane of the line 18 and substantially coin cident with the center of gvration--that is to say, the upper surface of the lower washer 21 is convex andthe meeting or lower surface of thewasher 20 is correspondingly concavev Preferably, and as herein shown, both of said Washers are capable of sli ht lateral movement independently of one 1 other and independently of. the bearings between which they are interposed, the washers bein to this end made slightly smaller in externa di and having their central openings made slightly larger than the diameter of that part of the mailrshaft which they encircle.

In order to provide for lubrication of the bearing parts, the cap member 14 is provided with an annular recess in its upper side, from which lead downwardly a plurality of oil-ports 23, which open into an annular groove 24, formed in the top surface of the Washer 20. From the groove 24 similar ports 25 lead through. the washer into another annular groove 26, formed between the meeting surfaces of the washers, and from the groove 26 other ports 27 lead down. to the top surface of the supporting-ledge. Preferably a slight i turned lip 28 surrol'inds the inner edge of t 10 ledge 11, so as to tend to retain the lubricant between the surface of the ledge and the washer 21, but nevertheless free flowway is provided over the lip 28 and downwardly between the inner edge off the ledge and the main shaft, so that the oilmay pass downwardly tothe cylindrical bearin -surface 19 of the shaft. That part-of the hlib of the s ider which cooperates with. this cylindrical caring 1 9 is lined with a suitable bushing 29, which is capable of removal for renewal. The entire upper end of the hub is inclosed with a conica cap 30, as

is common, tlL's cap beingprovided with a removable screw-plug 31, occupying an ap erture through which oil ma be poured.

' The operation of the inec ia'nism has been clearly indicated in connection with the description of the parts thereof, and need not therefore be repeated.

I While I have herein shown and described what I deem to be a preferred embodiment of the invention, yet it will be obvious that with an overhanging annular. shoulder" supported by the annular shoulder of the supporting-sleeve.

In a gyratory crusher, the combination of a--spider-head bored to accommodat'ethe upper endof a main gyratory shaft, a supporting sleeve externally screw threaded vertically adjustable in said spider-head, an inwardly-projeating, upwardly-facing annular supporting-shouldcrupon said sleeve, a main shaft provided with an annular overhanging supporting-shoulder adapt-ed to cooperate with the supporting-shoulder of the sleeve, and an independent bearing-ring interposed between said shoulders.

. the details of construction and arrangement 3; In a gyratory crusher, the combination of a spidenhead bored to accommodate the upper end of a main gyratory'shaft, a= sup- .porting sleeve vertically adjustable insaid spider-head, means for locking said'sleeve in adjusted position, an inwardly-projecting, upwardly-facing annular supportin -sh ouldei' upon said sleeve, a main gyratoryshaftprovided with anannular overhanging sup porting-shoulder adapted to C06 erate'with. the shoulder of the sleeve, an a washer member interposed between said shouldered parts, one face of said washer member being formed with a surface concentric with the center of gyration of said main shaft, and a contacting member which engages said surface provided with a corresponding surface.

4. Ina gyratory crusher, the combination. of a spider-head hored axially to accommodate a main yratory' shaft, a supportingsleeve vertica 1y adjustable in said spiderhead and provided with an internal annular supporting-shoulder, a main shaft provided with an 'annular'overhanging supporting shoulder arranged in overlapped relation to the supporting-shoulder of the sleeve, and a pair of bearing-ringsinterposed between said shoulders in superposed relation, the

meeting surfaces of said bearing-rings being formed substantially concentric with the center of gyration of the main shaft.

5. In a gyratory crusher, the combination of a spider-head bored axially to accommodate a main gyretory shaft, a supportingsleeve vertically adjustable in said spiderhead and provided with an annular inwardlyprojecting supporting-shoulder, a main shaft provided at its upper end with a detachable cap member, the peripheral portions of which project beyond the sides of the main shaft and form an overhanging supportingshoulder, and one ormore bearing-rings interposed between the shoulder of said cap memher and the annula" shoulder of the supporting-sleeve.

l6. In agyratory crusher, the combination of a, spider-head bored to accommodate the upper end of a main shaft and counterbored above the bearing for said main shaft, a fixed bushing seated in said counterbore and internally threaded, a sup orting-sleeve externally threaded and ltting Within said bushing, said supporting-sleeve being provided With an inwardly-projecting annular supporting-shoulder, and a main shaft provided with an annular overhanging shoulder overlapping the shoulder of the supportingsleeve and supported by the latter, substantially as described.

WILLIAM A. SPRING; W itncsses:

ALBERT ll. GRAVES, FREDERICK 0. (3001mm. 

